<!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>js</title>
	<link rel="stylesheet" href="1366.css">
</head>
<body>
	<div class="main">
		<h1>aaaaaaaaaaaaaaaaaaa</h1>
		<h1>aaaaaaaaaaaaaaaaaaa</h1>
		<h1>aaaaaaaaaaaaaaaaaaa</h1>
		<h1>aaaaaaaaaaaaaaaaaaa</h1>
	</div>
	

<script>
	//主要是针对宽做项目
	sw=screen.width;
	
	alert(sw);
	
</script>
</body>
</html>